【摘要】 根据1988—2009年张家口伸缩仪3方向的线应变资料计算出最大主应变、最大剪应变以及主应变方向等平面应变参数,分析张家口地区的断层特征、张家口伸缩仪观测环境的变化,结合1988—2009年张家口地区Ms≥4.0级以上地震,研究张家口地区应变参数的变化特征。更多还原

【Abstract】 In this study,we calculated the strain parameters,including maximum principal strain,maximum shear strain,and principal strain direction on basis of datum of Zhangjiakou extensometer,analyzed the fault characteristics of Zhangjiakou area and the change of observation environment,studied the variation characteristics of strain parameters combining with Ms≥4.0 earthquakes from 1988 to 2009 in Zhangjiakou area.更多还原